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Clad in Sky
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Joined: 04 May 2007
Posts: 851
Location: Germany

PostPosted: Mon Dec 23, 2013 2:52 pm    Post subject: Can't burn DVDs or CDs Reply with quote

I'm having trouble burning media but I can't find the problem, so I'd be thankful for any hints.

Trying to burn an iso or a project created with Brasero always results in an error. There's not much of an error message only that there was an IO error on the SCSI device. Nothing whatsoever seems to be written to the discs, they show up as blank disks if I insert them again.

cdrecord is a bit more verbose, but doesn't really help me, neither:
Code:

cdrecord dev=/dev/sr0 brasero.iso
cdrecord: No write mode specified.
cdrecord: Assuming -sao mode.
cdrecord: If your drive does not accept -sao, try -tao.
cdrecord: Future versions of cdrecord may have different drive dependent defaults.
Cdrecord-ProDVD-ProBD-Clone 3.01a16 (x86_64-unknown-linux-gnu) Copyright (C) 1995-2013 Joerg Schilling
scsidev: '/dev/sr0'
devname: '/dev/sr0'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.9'.
Device type    : Removable CD-ROM
Version        : 5
Response Format: 2
Capabilities   :
Vendor_info    : 'Optiarc '
Identifikation : 'DVD RW AD-7710H '
Revision       : '1.S0'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96R RAW/R16 RAW/R96P RAW/R96R
cdrecord: Warning: Cannot read drive buffer.
cdrecord: Warning: The DMA speed test has been skipped.
Starting to write CD/DVD/BD at speed 24 in real SAO mode for single session.
Last chance to quit, starting real write    0 seconds. Operation starts.
cdrecord: WARNING: Drive returns wrong startsec (0) using -150
cdrecord: Input/output error. write_g1: scsi sendcmd: no error
CDB:  2A 00 00 00 01 F0 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: F0 00 03 FF FF D2 91 0A 00 00 00 00 0C 00 00 00
Sense Key: 0x3 Medium Error, Segment 0
Sense Code: 0x0C Qual 0x00 (write error) Fru 0x0
Sense flags: Blk -11631 (valid)
cmd finished after 23.058s timeout 200s
write track data: error after 1015808 bytes
cdrecord: A write error occured.
cdrecord: Please properly read the error message above.

This might be a problem, but I'm not sure about it. How else could I tell cdrecord which drive to use?
Code:

Warning: Open by 'devname' is unintentional and not supported.


I booted up Mint from an USB stick and tried to burn from there, which didn't work, neither. I still don't think it is a HW failure, since this burner is not old and hasn't really been in use since.
Any ideas what else might be the problem? Unfortunately I can't try if it works in Windows since I don't have any Windows version available.

Dmesg shows nothing.

After some more research:
Could this be a group thing? Do I have to be in any special group to burn a CD? But if this were the case, burning should work as root, right? But it doesn't.

Here's the error part of brasero-session.log. Not really different from above.
Code:

BraseroLibburn SCSI error condition on command 2Ah WRITE(10): [3 0C 00] Medium error. Write error.
BraseroLibburn called brasero_job_get_session_output_size
BraseroLibburn called brasero_job_set_current_action
BraseroLibburn Libburn reported an error SCSI error on write(640,16): [3 0C 00] Medium error. Write error.
BraseroLibburn called brasero_job_error
BraseroLibburn finished with an error
BraseroLibburn asked to stop because of an error
   error      = 1
   message   = "SCSI error on write(640,16): [3 0C 00] Medium error. Write error."
BraseroLibburn stopping
Session error : SCSI error on write(640,16): [3 0C 00] Medium error. Write error. (brasero_burn_record brasero-burn.c:2856)

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Roman_Gruber
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Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Mon Dec 23, 2013 4:54 pm    Post subject: Reply with quote

In the past I think linux needed plugdev permissons to write to CD/DVD media.

e.g.
Code:
# groupadd plugdev
# usermod -a -G plugdev josephsys


As these days with systemd some things have changed. Please check if you need plugdev group for writing CD/DVDs.

Just a guess but please check for needed Permissions or kernel settings. It may also help if you provide if you use systemd or something else for your box.
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Clad in Sky
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Joined: 04 May 2007
Posts: 851
Location: Germany

PostPosted: Wed Jan 01, 2014 7:40 am    Post subject: Reply with quote

Hello,

group permissions should be OK - or rather, perhaps not, but if so, they're not the only problem, for I can't write media as root, neither.
I'm not using systemd, still on udev.
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